Home
Class 11
MATHS
(A^c cup A)^c=phi is the relation true o...

`(A^c cup A)^c=phi` is the relation true of false? Give reason.

Promotional Banner

Topper's Solved these Questions

  • MODEL QUESTION PAPERS-SET 2

    UNITED BOOK HOUSE|Exercise EXERCISE|48 Videos

  • MODEL QUESTION PAPERS-SET 4

    UNITED BOOK HOUSE|Exercise EXERCISE|47 Videos

Similar Questions

Explore conceptually related problems

If a ne1 be a real positive number , can the relation sin theta =a+1/a be true ? Give reasons.

State whether the following statements are true or false. Give reasons for your answers. The sum of the interior anlges of a quadrilateral is 350^(@)

State whether the following statements are true or false. Give reasons for your answers. The sum of two even number is even .

State whether the following statements are true or false. Give reasons for your answers. A rhombus is a parallelogram .

State whether the following statements are true or false. Give reasons for your answers. Square number can be written as the sum of two odd numbers .

State whether the following statements are true or false. Give reasons for your answers. For any real number x , x^(2) ge 0 .

Which of the sets of the following sets are null sets? Give reasons infavour of your answers: Y=phi ,

State which of the following statements are true and which are false ? Give reasons for your choice. the degree of a constant term is zero.

State whether the following statements are true or false with reasons. (i) For any binary operation ** on NN , a**a=aAAainNN . (ii) If ** , a binary operation ** on NN is commutative then, a**(b**c)=(c**b)**a .

State which of the following statements are true and which are false ? Give reasons for your choice. The degree of a polynomial is one more than the number of term in it.

UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 3-EXERCISE
  1. The median of 22,20, 22, 25, 19, 30, 27 is

    Text Solution

    |

  2. variance of 1st n natural number is

    Text Solution

    |

  3. (A^c cup A)^c=phi is the relation true of false? Give reason.

    Text Solution

    |

  4. If the realtion R defined as the set S = {1.-2, 3, 4},,AA,a,b in s,aRb...

    Text Solution

    |

  5. Show that sectheta+tantheta=tan(pi/4+theta/2)

    Text Solution

    |

  6. In /\ABC, if a = 3. b = 5 and c =7, show that the triangle is obtused.

    Text Solution

    |

  7. If | z + 2 | + | z - 2 | le 6, find the maximum value of I z I.

    Text Solution

    |

  8. If m=^nC2show that ^mC2=3^(n+1)C4

    Text Solution

    |

  9. If a+b=3,then show that the minimum value of |a+ib|=is 3/sqrt2

    Text Solution

    |

  10. Find the sum of the following infinite G.P series 0.9+0.81+0.792+….

    Text Solution

    |

  11. Show that the distance between (1,-1) and ((2m^2)/(1+m^2),(1-m)^2/(1+m...

    Text Solution

    |

  12. Find the radius of sphere passing through (2,0,1) and having centre(0,...

    Text Solution

    |

  13. Prove that lim(xrarroo)(1+1/x)^x=e

    Text Solution

    |

  14. For all real values of x and y, if f(x+y)=f(x)f(y), f(5)=4, f'(0)=2, f...

    Text Solution

    |

  15. IfP(A)=1/2,P(B)=1/3)and P(A capB)=1/4find (A 'capB')

    Text Solution

    |

  16. In.an examination. 50%of the condidates have passed in mathematics 50%...

    Text Solution

    |

  17. If A,B,(A - B)are positive acute angles, then prove that geometrically...

    Text Solution

    |

  18. Show thatcos((2pi)/7)+cos((4pi)/7)+cos((6pi)/7)=-1/2

    Text Solution

    |

  19. Show that a^6+a^4+a^2+1=0,when a=1/sqrt2(1+i)

    Text Solution

    |

  20. Prove by mathematical induction:(3^(4n+1)+2^(2n+2))is divisible by 7.

    Text Solution

    |